KR0138016Y1 - Air-guiding structure for cooling motor of airconditioner in a car - Google Patents

Abstract

The present invention relates to an air guiding structure for cooling a motor of an automobile air conditioner, and in an air guiding structure for guiding air flowing out of an impeller 31 of a blower to cool the motor 33 of the blower, the impeller The impeller case 51 disposed outside the impeller 31 to guide the air flowing out from the 31 and the motor 33 are accommodated to protect the motor 33 and guide the air to cool the motor 33. It characterized in that the motor cover means 53 disposed on the lower side of the impeller case 51 so as to, and is configured in this way, assembling is easy and the manufacturing cost is reduced.

Description

Air guide structure for motor cooling of automobile air conditioner

1 is a configuration diagram of an air circulation unit of an automobile air conditioner.

Figure 2 is a longitudinal cross-sectional view showing an air guiding structure for cooling the motor of a conventional vehicle air conditioner.

3 is an exploded perspective view of FIG.

Figure 4 is a longitudinal cross-sectional view showing a motor guide air cooling structure for a motor vehicle air conditioner according to an embodiment of the present invention.

5 is an exploded perspective view of FIG.

* Explanation of symbols for main parts of the drawings

31: Impeller 33: Motor

51 impeller case 53 motor cover means

55: lower case 57: upper case

59: main cover member 59c: first air guide flow path

59d: second air guide flow path 61: auxiliary cover member

The present invention relates to an air guiding structure for cooling a motor of an automobile air conditioner, and more particularly, to an air guiding structure for guiding air flowing out of an impeller of a blower to cool the motor of the blower, wherein the air is guided to the motor cover itself. The present invention relates to an air guiding structure for motor cooling of an automobile air conditioner, which facilitates assembly and reduces manufacturing costs by forming a flow path to reduce the number of parts.

In the vehicle air conditioner, the air circulation unit for circulating air in the interior of the vehicle is provided with indoor air inlets (3, 5) on the left and right sides of the outdoor air inlet (1), as shown in FIG. Blower (7) inside the outdoor air inlet (1) or indoor air inlet (3, 5) so that the air is sucked from the outdoor air inlet (1) or indoor air inlet (3, 5) to increase the flow force ) Is disposed, and on one side of the blower (7) is provided with an evaporator (9) through which a refrigerant flows therein so as to change the air having increased flow force by the blower (7) into cold, One side of the evaporator (9) is provided with a heater (11) to change the air flow is increased by the blower (9) to warm, one side of the heater (11) air to the interior of the car A plurality of outlets (13, 15) are formed so that the outlet, the outlet (13) The outlet tube has an outlet air flowing through the 13 is manifold 17 is disposed so as to branch into a plurality of directions.

In addition, the outdoor air inlet (1) and the indoor air inlet (3,5) where the outdoor air inlet (1) and the indoor air inlet (3, 5) meets each other to convert the inflow path of the air flowing through the indoor air inlet (3,5) The doors 19 and 21 are hinged, respectively, so that the air flowing in the front and rear of the heater 11 is blocked or distributed to the heater 11 through the evaporator 9 and at the same time, the air flow direction. The doors 23 and 25 are hinged so as to change the shape, and the doors 27 are formed at the portions where the outlets 13 and 15 meet to convert the outflow paths of the air flowing out through the outlets 13 and 15. ) Is hinged, the door 29 is hinged to the branch pipe 17 to adjust the flow direction of air branched to each branch flow path.

In addition, the blower 7 is composed of an impeller 31 and a motor 33 for rotating the impeller 31 using a shaft member (not shown) as a medium. In addition, a cooling passage 35 is formed at one side of the motor 33 to cool the motor 33.

When operating the operation means (not shown) to cool the inside of the vehicle in the air circulation unit of the vehicle air conditioner configured as described above, the doors 19 and 21 are opened at the outdoor air inlet 1 or the indoor air inlet 8,5. The doors 23 and 25 are closed by the heater passages to block the heaters 11, and the doors 27 and 29 are positioned in a predetermined direction. At the same time, the motor 33 of the blower 7 operates so that the impeller 31 rotates, a refrigerant cycle is formed, and the refrigerant flows in the evaporator 9. At this time, the heater 11 does not operate.

Therefore, the air sucked into the impeller 31 from the inlet A or the inlet B and C directions by the shape and the rotational force of the impeller 31 is discharged toward the evaporator 9, and the evaporator 9 The air passing through the heat exchanger with the refrigerant flowing in the evaporator 9 is converted into cold, and the cold air is discharged into the vehicle through the outlet (F), the outlet (G) or the outlet (H).

At this time, part of the air flowing out of the impeller 31 of the blower 7 flows into the motor 33 through the cooling passage 35 to cool the motor 33.

Then, when operating the operation means (not shown) to heat the inside of the vehicle in the air circulation unit of the vehicle air conditioner, the door (19, 21) is opened in the outdoor air inlet (1) or the indoor air inlet (3, 5) The doors 23 and 25 are opened in the heater passage, and the air passage communicates toward the heater 11, and the doors 27 and 29 are positioned in a constant direction. At the same time, the motor 33 of the blower 7 operates, the impeller 31 rotates, and the heater 11 operates to generate heat. At this time, no refrigerant cycle is formed and no refrigerant flows in the evaporator 9.

Therefore, the air sucked into the impeller 31 from the inlet A or the inlet B and C directions by the shape and the rotational force of the impeller 31 passes through the evaporator 9 in the direction of the passage D, i.e., the heater. Flow toward (11), the air passing through the heater 11 is warmed by the heat generated by the heater 11 is turned into warm, the warmth is the outlet (F), outlet ( G) or the outlet H is discharged into the vehicle.

In the air circulation unit of the automobile air conditioner configured as described above, in the conventional motor cooling air guide structure, as shown in FIGS. 2 and 3, an impeller 31 is disposed on the motor shaft of the motor 33. An impeller case 37 is disposed outside the impeller 31 to guide the air flowing out of the impeller 31, and at the lower side of the impeller case 37, the motor 33 is accommodated and protected at the same time. The cover member 39 is disposed, and a lining member 41 is disposed on the upper side of the motor cover member 39 to prevent leakage of air, and the motor cover member 39 is disposed on one side of the motor cover member 39. Guide pipe 43 is disposed in communication with the interior of the impeller case 37 to guide the air into the inside of the, and the electric wire for supplying power to the motor 33 on the wall of the motor cover member 39 Auxiliary beaker to cover the opening 39a opened for excretion The burr member 45 is inserted and disposed.

At this time, the impeller case 37 and the motor cover member 39 are formed with protruding pipe parts 37a and 39b, respectively, to install the guide pipe 43.

In the motor guide air cooling structure for a conventional motor vehicle air conditioner configured as described above, a part of the air flowing out of the impeller 31 flows into the motor cover member 39 along the guide tube 43 to the motor 33. The heat generated by the driving of cools down.

However, the conventional air cooling structure for motor cooling of the conventional vehicle air conditioner configured as described above includes a protrusion pipe portion 39b protruding in a direction perpendicular to the outer circumferential surface of the motor cover member 39 together with the motor cover member 39. Since it cannot be formed by one injection molding, the parts of the protruding pipe portion 39b need to be separately injection molded and attached to the motor cover member 39, and a separate guide tube 43 is produced to produce air leakage. Since the guide tube 43 must be disposed in the protruding tube portion 37a of the impeller case 37 and the protruding tube portion 39b of the motor cover member 39 with a solvent to prevent the assembly of the air guide structure. Not only was it not easy, but there was a problem that the manufacturing cost increases.

In addition, there is a problem in that a separate lining member 41 must be inserted to prevent air leakage between the impeller case 37 and the motor cover member 39.

Therefore, the present invention is made to solve the above problems, the object of the present invention is to form an air guide flow path in the motor cover itself while reducing the number of parts at the same time along the circumferential groove formed on the bottom of the impeller case By tightly adhering to the motor cover to combine the impeller case and the motor cover with each other, it is to provide an air guide structure for cooling the motor of the automobile air conditioner is easy to assemble and at the same time reduce the manufacturing cost.

The air guide structure for cooling the motor of the automotive air conditioner according to the present invention made to achieve the above object guides the air flowing out of the impeller of the blower in the air guide structure for cooling the motor of the blower, from the impeller And an impeller case disposed outside the impeller to guide the outflow air, and a motor cover means disposed below the impeller case to guide and cool the motor while accommodating and protecting the motor. It is done.

Hereinafter, with reference to the accompanying drawings for a motor cooling air guide structure of a vehicle air conditioner according to an embodiment of the present invention will be described in detail.

4 and 5, an impeller 31 is disposed on the motor shaft 33a of the motor 33 to impart a flow force to air according to the rotation thereof, and the outside of the impeller 31 is provided. The impeller case 51 is disposed to guide the air flowing out from the impeller 31, and the impeller case is accommodated to accommodate and protect the motor 33 and guide the air to cool the motor 33. The motor cover means 53 is disposed under the 51.

The impeller case 51 is generally algebraic, and has a lower case 55 in which the motor cover means 53 are disposed so as to be easily manufactured, and an upper case 57 coupled to an upper side of the lower case 55. Consists of

The lower case 55 is generally a log-shaped type, and an opening portion 55a is formed in the middle portion of the lower case 55 so that the motor 33 penetrates therethrough, and the motor cover means is formed at the bottom of the lower case 55. The groove portion 55b is formed along the circumferential surface thereof at regular intervals from the edge of the opening 55a so that 53 is inserted and disposed therein, and the motor cover means 53 supplies air for cooling the motor 33. A guide passage 55c is formed to guide the to.

The upper case 57 is generally plate-shaped, and has an inlet hole 57a at an intermediate portion thereof so that air flows into the lower case 55 as the impeller 31 is rotated.

The motor cover means 53 is provided with a flange portion 59b so that the accommodating portion 59a is formed at the lower portion thereof to accommodate the motor 33, and the upper portion thereof is fastened to the lower portion of the impeller case 51. The main cover member 59 is provided, and the auxiliary cover member 61 detachably coupled to the upper side of the main cover member 59 to guide the flow of air.

The main cover member 59 has a recessed portion of the first air guide passage 59c horizontally formed in the flange portion 59b so as to communicate with the guide passage 55c to guide the air. The recessed portion of the second air guide passage 596 is formed in the receiving portion 59a vertically in communication with the first air guide passage 59c so as to guide the lower portion of the motor 33. Openings 59e are formed at certain portions of the accommodating portion 59a at regular intervals from the second air guide passage 59d so as to provide a wire for supplying power to the edges of the flange portion 59b. The bent band 59f is formed along the circumferential surface of the lower case 55 so as to be inserted into the recess portion of the lower case 55.

At this time, the concave portion 55b is formed in the lower case 55 of the impeller case 51 to easily assemble the impeller case 51 and the motor cover means 53 and prevent air leakage. On the upper side of the motor cover means 53, a bending band 59f is inserted into the groove portion 55b.

The auxiliary cover member 61 has a first cover portion 61a formed in a horizontal direction to cover the first air guide passage 59c and a second cover portion to cover the second air guide passage 59d. 61b is formed downward in a vertical direction with respect to the first cover part 61a, and a third cover part 61c is formed in a vertical direction to cover the opening 59e, and the first cover part ( A connecting portion 61c is disposed between the first cover portion 61a and the third cover portion 61c so as to connect 61a to the third cover portion 61c and cover the upper portion of the opening 59e. It has a formed structure.

At this time, when the third cover portion 61c is inserted into the opening 59e, the third cover portion (ie, a through hole is formed in the lower portion of the opening 59e so that the wire of the motor 33 passes through the outside). The length of 61c is smaller than the vertical length of the opening portion 59e.

The operation and effects of the air guiding structure for cooling the motor of the vehicle air conditioner according to the embodiment of the present invention configured as described above will be described below.

First, a method of assembling the air guiding structure for cooling the motor will be described.

The first cover portion 61a is covered by the recessed portion of the first air guide passage 59c of the main cover member 59, and the second cover portion 61b is recessed in the recessed portion of the second air guide passage 59d. ) And the auxiliary cover member 61 is coupled to the main cover member 59 so that the third cover portion 61c and the connection portion 616 are covered with the opening 59e. At this time, a through hole communicating with the inside of the accommodating portion 59a is formed at a lower end of the second air guide passage 59d, and a wire connecting portion of the motor 33 is provided at the lower end of the opening 59e. The through hole is formed so that the electric wire to connect may pass.

Next, the right end portion of the first air guide passage 59c of the motor cover means 53 communicates with the guide passage 55c of the lower case 55 and at the same time, the bending band of the main cover member 59. When the motor cover means 53 is coupled to the impeller case 51 so that the 59f is inserted into the recess 55b of the lower case 55, the assembly of the motor cooling air guide structure is simply completed. do.

After disposing the motor 33 in which the impeller 31 is assembled in the air cooling structure for motor cooling assembled as described above, the air cooling structure for motor cooling is disposed in the air circulation unit of the car air conditioner. When the motor 33 is operated, a part of the air discharged from the impeller 31 according to the rotation of the impeller 31 passes through the guide passage 55c, the first air guide passage 59c, and the second air guide passage 59d. ) Is sequentially passed through the discharge to the lower side of the motor 33 to cool the motor (33).

Therefore, the air guide structure for cooling the motor according to an embodiment of the present invention is simple in structure and assembly, without having to arrange a duct guide for cooling the motor 33 and a separate lining member for preventing air leakage. By the operation it will be possible to the cooling function and the air leakage prevention function for the motor (33).

As described above, the air guiding structure for motor cooling of an automobile air conditioner according to the present invention forms an air guiding flow path in the motor cover itself to reduce the number of parts and along the circumferential groove formed on the bottom of the impeller case. By tightly adhering the motor cover to combine the impeller and the motor cover with each other, it is a very practical design that is easy to assemble and at the same time reduce the manufacturing cost.

Claims (5)

In the air guide structure for guiding the air flowing out of the impeller 31 of the blower to cool the motor 33 of the blower, the outside of the impeller 31 to guide the air flowing out of the impeller 31. Motor cover means (53) disposed below the impeller case (51) to receive and protect the disposed impeller case (51) and the motor (33) while guiding air for cooling the motor (33). Motor guide structure for cooling the motor of the automobile air conditioner, characterized in that consisting of. The lower case 55 of the impeller case 51 to easily assemble the impeller case 51 and the motor cover means 53, and to prevent air leakage. Is formed and a bending band (59f) is inserted into the groove portion (55b) is formed on the upper side of the motor cover means (53) for the motor cooling air guide structure of the automobile air conditioner. 2. The flange portion 59b of claim 1, wherein the motor cover means 53 is fastened to an accommodating portion S9a formed at a lower portion thereof to accommodate the motor 33 and to a lower portion of the impeller case 51. Motor cover of the air conditioner of the automobile, characterized in that made of a main cover member 59 and an auxiliary cover member 61 detachably coupled to the upper side of the main cover member 59 to guide the flow of air. Air guide structure. 4. The main cover member (59) according to claim 3, wherein the recessed portion of the first air guide passage (59c) is formed in the flange portion (59b) horizontally so as to guide air to the main cover member (59). A groove of the second air guide flow passage 596 is formed in the receiving portion 59a vertically in communication with the first air guide flow passage 59c to guide the lower portion of the bottom portion 33). Openings 59e are formed at certain portions of the accommodating portion 59a at regular intervals from the second air guide flow passage 590 so as to distribute the wires to be supplied. Air guidance structure. 4. The auxiliary cover member 61 covers the first cover portion 61a formed in a horizontal direction to cover the first air guide passage 59c and the second air guide passage 596. The second cover portion 61b formed downward in the vertical direction with respect to the first cutter portion 61a, the third cover portion 61c formed in the vertical direction so as to cover the opening 59e, and the first cover portion 61c. A connecting portion formed between the first cover portion 61a and the third cover portion 61c to connect the cover portion 61a and the third cover portion 61c and to cover the upper portion of the opening 59e. Motor cooling air guide structure of the vehicle air conditioner, characterized in that consisting of (61d).